List of Famous people who are 31

Park Gyeong-ree, better known mononymously as Gyeongree, is a South Korean singer, actress and model. She is a current member of the South Korean girl group 9Muses.

Rian Agung Saputro is an Indonesian badminton player. He was partnered with Angga Pratama in men's doubles, but split after the 2014 Asian Games. Saputro was then partnered with Berry Angriawan. They debuted at the 2014 Hong Kong Super Series. They won their first Grand Prix Gold title at the 2015 Indonesian Masters. In 2016, he was paired with former Olympic gold medalist, Hendra Setiawan. Saputro was then paired with Setiawan's former partner, Mohammad Ahsan. Ahsan and Saputro's first international title was in 2017 China International. They later won silver at the 2017 BWF World Championships.

Tamás Kádár is a Hungarian professional footballer, who plays for Chinese Shandong Luneng. He is a defender and is equally capable at centre-back or left-back. He made his debut for Zalaegerszegi TE at the age of 16 and has since gone on to win Hungary U-21 honours.

Seo Eun-kwang, also simply known as Eunkwang, is a South Korean singer, entertainer, musical actor and the leader and main vocalist of the South Korean boy group BtoB.

Fady Nagah is an Egyptian football player who is currently plays for Al Mokawloon.

Kim So-ya is a South Korean singer, known mononymously as Soya. She debuted in 2010 as a member of the duo Soya n' Sun under 101 Entertainment.